Cleaning Feces in Mobile Toilets

Cleaning feces in mobile toilets requires selecting appropriate methods based on the toilet type, along with proper personal protection and regular maintenance.

1. Water-flush and Non-water-flush Suction Types
These toilets collect waste in a bottom sewage tank. When the number of users reaches a specified limit, a professional suction device (such as a fecal suction truck) is needed to extract the contents of the sewage tank to prevent overflow. During suction, ensure the device is sealed to prevent sewage leakage and secondary pollution. After cleaning, check the tank's seal and disinfect it regularly.

2. Recirculating Water-flush Type
This type uses intermittent aerobic and anaerobic treatment units along with biological bacteria to accelerate fecal decomposition. The treated wastewater is filtered and recirculated for flushing. The key lies in biological degradation efficiency, requiring regular replenishment of biological bacteria and water quality monitoring to ensure decomposition effectiveness. If system failures cause fecal accumulation, suction devices are still needed to clean up residues.

3. Dry Packing Type
Biodegradable plastic bags are used to collect waste, with a new bag automatically replaced after each use. During cleaning, seal the full bags and collect them centrally for transport to a professional treatment plant for harmless disposal. This method does not require suction devices but requires ensuring the quality of the plastic bags to prevent leakage from damage.

4. Foam Sealing Type
Foam generated by a foaming liquid mixture covers the inside of the toilet bowl, reducing odors and preventing waste splatter, but waste still needs to be collected in a sewage tank or fecal storage tank. During cleaning, first suction the contents of the sewage tank, then rinse any residual foam inside the toilet bowl to prevent pipe blockages.

5. Microbial Type
A solid-liquid separation device separates feces into a fermentation tank, where sawdust and biological bacteria are added for decomposition into water and carbon dioxide. Urine is treated into reclaimed water for flushing. During cleaning, check the activity of the bacteria in the fermentation tank. If decomposition efficiency declines, replenish the bacteria or clean up residual solids.

6. Standalone or Row-connected Mobile Toilets
Standalone toilets are equipped with removable fecal storage buckets or plastic bags, requiring manual regular cleaning. Row-connected toilets are connected via pipes to underground fecal storage tanks, which are suctioned by fecal suction trucks and sent to wastewater treatment plants. During cleaning, wear protective clothing, gloves, and masks to avoid direct contact with waste. After cleaning, disinfect the tools and the inside of the toilet.

General Precautions: Regardless of the type, regular equipment maintenance is essential. During cleaning, ensure proper personal protection to avoid direct contact with waste and prevent bacterial or viral infections.